Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Is My Calculation of Centripetal Acceleration and Tangential Velocity Correct?
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Hooke's Law using Potential Energy
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Forces acting on a box-pulley system in an elevator?
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A loaded railroad car is rolling at a constant velocity
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Work done during quasi-static, isothermal expansion from P_i to P_f
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Potential associated with a conservative force field F
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MIT OCW 8.01 PS10.6: A Massive Pulley and a Block on an Incline
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Using Momentum Principle to Find Ratio of Speeds?
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Using Momentum, KE and PE to solve this skier velocity problem
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Newton's Second Law (Pulley Sustem)
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Apparent weight of body immersed in liquid
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How Do I Determine the Center of Mass in This Situation?
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In a constant acceleration motion, Is it possible to have constant speed?
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Is Exponential Form Better for Balloon with Inserted Load Calculation?
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Motion in straight line in bungee jumping
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Springs connected to a mass in series?
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What is a spring constant of 20 N/m used for?
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Finding an application where an air/n-octane mixture is cooled
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Why Is Average Thermal Power Not Negative in This Friction Scenario?
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Equilibrium Question Involving boat and scale
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Mirror system in geometrical optics
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MIT OCW 8.01 PS11.3: Elastic Collision Between Ball and Pivoted Rod
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Towing two stacked boxes up a ramp
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Log-log graph of resistance against temperature for a carbon resistor
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Questions about a spring-mass system hanging vertically
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Attempting to teach this: Momentum and Impulse
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Chrenkov radiation cone angle vs. the speed of the particle
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Calculate ideal-gas temperature of a material
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Questions Regarding a Cat Going Up a Ramp
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Oscillator Differentials: What's a physical meaning of complex part of the solution for coordinate change of the anharmonic oscillator?
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Describe how you could use a pith ball as an electroscope
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IGCSE Pressure Question: How many balloons can be inflated?
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Method of mirroring - metal plates
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Nuclear Fission Energy and Mass Loss
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How to Analyze the FBD of a Toy Car on the Underside of a Dome?
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Calculate magnetic dipole of other planets relative to the Earth
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Projectile Motion Problem: Kicking a soccer ball over a fence
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Holonomic constraints and non-holonomic system
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Modelling a spring system with damping force and external forces
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Physics problem - Salmon jumping waterfall
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Need help with a question on potential difference
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A Level: Rearranging Equations into Y = mx + c
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What Are the Key Equations in Shock Wave Analysis?
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Two masses and two pulleys problem
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Object A (in free fall) hits object B (ascending with constant velocity)
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Help with question on motion: Avoiding a rear-end collision
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Can a sudden blow truly change potential energy?
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Spring-mediated dipole in a magnetic field
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Falling hailstones hitting two car windscreens
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Pulling a block along a surface using a string inclined at an angle
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Is my work correct? (Two students running on a track)
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Particle dynamics (mechanics): inclined plane, pulley, two blocks
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Newton's law problem: Pushing 2 stacked blocks on a horizontal table
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Very heavy particle collides with a very light particle
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Finding the position where the electric field is zero
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Find the partial diameter error of the surface area of cylinder
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Charge density in sphere that makes constant radial E-field inside
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Kinematic car overtake problem: Don’t know what to do...
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Force exerted on block B by Block A when being pushed on a frictionless surface
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Question(s) Regarding Magnitude of Force (Window Washer Problem)
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Change in volume of sphere with change in temperature
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Q： Why is it a reversible adiabatic process but not isentropic?
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Is the Photoelectric Effect Proof That Light Is a Particle?
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Tension in cable D is equivalent to the tension in cable B?
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Sequences of measurements in quantum mechanics
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Is the normal force at the top of a rollercoaster loop always directed upwards?
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Foucault Pendulum at the North Pole
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What is the Largest Quantum Number for Li3+ with a 60 Å Orbital Radius?
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Why is momentum equal to mass times velocity?
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Potential at a point inside a solid non conducting uniformly charged sphere
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Why is there are precession frequency here?
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How Does Centripetal Force Influence the Flight of a Rubber Band?
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Calculating relative velocity -- Jumping between two moving trains
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Ohm's Law confusion -- How to handle an incandescent bulb?
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Calculating Torque on this Square
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The velocity of a satellite rotating around the Earth
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Doubt Calculating the Total Displacement for this Person Walking
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Brightness of two lamps in a circuit having a changing magnetic field
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Which material has the greatest Young's Modulus?
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How many discs will slide off the board as it decelerates?
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Correct energy transformation about circuit with EMF, a resistor and a motor
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Momentum in a Head-on collision
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Contradictory Sources: Trying to understand waves on a rope being reflected at a boundary
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Assistance in cutting down unneeded information in physics report
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2 masses connected by spring, one is pulled, how much does the spring stretch?
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Questions about speed and motion of a toy car on a conveyor belt
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Diffrence between resolving vector to components and find projections
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Two Equations for Average Velocity?
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Will The Cars Stop In Time? - Check My Work Please :)
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How can a transistor behave as a switch in the saturated region?
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Electric field in a second dielectric given a 2 dielectric system
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Atwood at an incline accelerating down
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Coherent interference at a low photon flux rate
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Work done during a collision -- Change in Kinetic Energy & change in Momentum
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What is the rocket's initial acceleration?
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Working mechanism of straws and siphon
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Magnetic field in a solenoid with rectangular cross-sectional area
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Calculations involving different Dielectrics and Capacitors
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Why Does Torque Equilibrium Not Solve for Fcy in Static Equilibrium Problems?
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Special Relativity problem: Lorentz transformation and Reference Frames
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